It’s already been reported as a bug in the Bugs section. (Jin Bed Crossbow is still bugged - Shots does not register correctly)
Now, I don’t really know if it’s a bug or if it’s actually part of how it’s designed so that it only hits with a certain probability.
But anyway, a unique unit that fills the role of a normal unit being weaker than its normal version is bad balance, so even if it was intentional, they should try to correct it a bit, or fix this problem if it’s a bug.